Edge gauge



Patented July 16, 1929.

N l T WALLACE S. TRINDER, 0F SHREWSBURY, MASSACHUSETTS, ASSIGNOR TO PEERLESS MACHINERY COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSA- CHUSETTS.

EDGE eAueE.

Application filed. June 18,

This invention relates to edge gauges and while capable of general use is more specifically designed for use on skiving machines of the general character shown in United States Letters Patent No. 220,906, to Ama Z'een, dated October 28, 187 9 for Leather skiving machines.

In the shoe manufacturing industry, particularly, it is customary to skive the edges of various parts of shoes in preparation of those edges either for edge folding or for seaming and in the former case, the skiving is deep while in the latter case it is comparatively shallow. In the use of skiving machines for doing thiswork, it is customary to feed the work through the machine in contact with an edge gauge which may be set to regulate the depth of the skived surface and when a shoe part has skived edges of different depth, it is necessary to re-set the gauge whenever the depth of the skived edge is changed. The resetting of the gauge consumes time and effort on the part of the operator and if it has to be done frequently to take care of the work as it comes to the skiving machine, the loss of time in the aggreout requiring any resetting of the gauge after its initial adjustment.

Another object of my invention is to provide a gauge having a plurality of edge guiding members whichmay be set at different points to secure skiving of difierent depths so that the work may be fed through the ma chine in engagement with the edge guide which will give the depth of skiving desired.

Another object of the invention is the provision of a gauge having a plurality of guiding members of such form of construction as to permit the work being passed through the machine in engagement with any one of the guiding members without encountering interference from the otherguiding members.

A further object of the, invention is to provide a gaugeof simple form which is of a low cost of construction, which is efiicient and durable and which will not get out of order. Other objects of the invention will be more specifically set forth and described herein-' after.

My invention contemplates an edge-gauge having a plurality of edge guiding members 1928. I Serial No. 286,289.

capable of beingadjusted independently of each other and so constructed that the work may be fed through the machine in engagement with the particular guiding member which will give the depth of skiving desired without interference from the other guiding members. In one form of'the invention, the guldmg members are loosely supported over the work in a dependingposition and held in guiding position by gravity. This permits the work to be fed'under the guiding members when necessary, the members riding on the gauge looking from left to right in Fig. 1;

Fig. 4 is a view in perspective of one of the guldlng members reversed; Fig.6 is a plan view of a rectangular shoe part having skived edges of different widths and Fig. 6 is a crosssectional view of the shoe 5 on line 66 therein.

Referring to the form of the edge gauge shown in the drawings, 10 designates an elongated plate having atone end a curved guiding member 12 and adjacent the other end a longitudinal. slot 14 whereby it may be adj ustably secured in operative position on the machine. Mounted on the plate is a flat bar 16 having one end extended beyond the guiding member 12 and formed into 2. dependingmember 18 for holding down the work. The member 18 is in cross-section substantially in the form of a quadrant of acircle (Fig; 3) with the curved portionvpresented toward the operator for facilitating the presentation of the work to the machine. The bar 16 at one end is held in position on the-plate 10. by

a thumb screw 20 threaded into the slotted.

end of said plate and adjacent its guiding member end by an upright screw 22 insaid plate. At its former end the bar 16 is tightly clamped to the plate 10 but at its latter end it is free to yield when thicker portions of the work pass under the depending member 18. A helical spring 24; is mounted on the upright screw 22 and is held under com pression' by a loose washer 26 and a thumb part shown in Fig.

nut 28 threaded on the upper end of the screw, which spring tends to hold thebar 16 downwardly while permitting it to yield when required. To adjust the bar vertically to regulate the position of the hold-down member 18 an adjusting thumb screw 30 is threaded through the bar 16 adjacent the screw 22 with its end bearing against the plate 10 and by turning the screw 80 the bar 16 may be raised or lowered at that end. The adjusting screw limits the downward movement of. the bar and hold-down member but does not prevent them from yielding under the impact of thicker portions of the work. When uniformly thick work is being fed through the machine, it is of advantage: to set the hold-down member slightly higher to avoid undue pressure on the work. A set nut 32 serves to hold the adjusting screw locked in adjusted position.

For providing oneor more guiding members in, addition to the main guiding member 12, a secondflat bar 34 is mounted on the bar 16 and 1s provided with threeslots (Figs.

= a 1 and 2) for receiving loosely the screws 20,

22 and 30 and for permitting the bar 3 1 to bemoved longitudinally in one direction or the other for purposes of adjustment. The free end 36 of thebar is turned up and carries a vertical socket 38 for holdinga guiding member 40' loosely. The socket may be formed in any suitablemanner but as shown is in the form of a vertical plate having its two sides turned around to enclose the sides of the guiding member. The upper portion 42 0f the latter is thickened to form a shoulder 44 for engaging the top of the socket to limit its downward movement and its lower portion is cut away to leave a. depending guide proper 46 which is rounded on that side toward the operator to facilitate the passage of the work through the machine.

The guiding member being loosely mounted inthe. socket and held in a lowermost position by gravity alone the work passes under it without obstruction when the guiding member 12is being used as the edge gauge and the member 46 then rides on the work.

In the drawings the edge gauge is shown as adapted to; a skiving machine of the type hereinbefore referred to in which 50 indicates a skeleton cutting; disk held on the end of a cutter shaft 52 between an inner disk 5&fastened'to said shaft. and an outer disk 56 secured by a screw (not shown) threaded into the end of said shaft.

Mounted. on a. shaft 60 is a feed roll 62 which cooperates with a feeding disk 64 carried by a shaft 66 to feed the work; the two shafts being substantially perpendicular to each other. The periphery of the feed roll is provided with an oblique feeding surface 68 having diagonal corrugations to grip the work. For a more complete description of theparts ofgtheskiving machine, their mode of operation and functions, reference may be made to the said Amazeen patent hereinbefore referred to.

In applying the edge gauge to said skiving machine, the plate 10 is fastened by a screw 70 to a bracket 7 2 in turn secured by a screw 74 to a part 7 6 of the frame of the machine. A slot 78 in the bracket for receiving the screw 7 4 permits of a vertical adjustment.

In the use of my edge-gauge, the gauge as a whole .is first adjusted vertically on the machineby adjusting the bracket 72 Vertically on the frame 76 of the machine and then the gauge is adjusted longitudinally on the bracket by manipulation of the plate 10 when the screw 7 O is loosened. In making this latter adjustment the guiding member 12 is positioned to give the material the extreme depth of skiving, The bar 34 is then re leased by loosening the three screws 20, 28 and 30 and the set nut 32 and is moved longitudinally in one direction or the v other to bring the guiding member 40 into exact position to serve as an edge-gauge for work to be skived a lesser depth. When so adjusted, thescrews are tightened. By the foregoing adjustment the work may be presented to the machine and fed therethrough using eitherthe guiding member 12 or the guiding mem-, ber 40 as an edge gauge. When the former is used the latter rides on the work and performs no function, and since it is loosely mounted in the socket it offers no obstructionto the passage of the work and does not mark. or deface it.

Inthe operation of the machine, the work to be skived is fed into the machineunder the hold-down member 18 with. its edge in engagement with the guiding member 12 or member 40 dependent upon whether adeep or a shallow skiving is desired. The shaft 52 is set at an angle and the cutting disklies in aplane slightly inclined to a horizontal plane which angle determines the obliquity. of the skived edge of the work. I

In Figures 5 and 6 is shown a rectangular shoe part 80 having two of its edges 82 provided with deep skiving and the'other two edges 84 with shallowskivingn In operating upon such a part, theoperator feeds the work on the two sides 82 against the guiding, member 12 andon the two sides. 84 against the member 40 thereby skiving all the edges of the part 80 in one continuous operation. Heretofore, when but one guiding member was provided, constant changes of the edge gauge'were required to take careof variations in the depth of skiving, which changes 'con sumed time and effort and interferedwith the progress andcontinuity of the work.

If desired, one or more additional sockets may bemounted on the bar for accommodating one or more guiding members where more. than two depths of skiving are required in the same piece of work but as a rule anedg'e:

tion than that herein shown and described all within the scope of the following claims.

What I claim is:

1. An edge gauge for skiving machines comprising an elongated plate slotted at one end and provided at the other end with an edge guiding member and adapted to be adjustably mounted on a skiving machine, a fiat bar mounted on. said plate and adjustable longitudinally thereof, a socket carried by said bar and a second edge guiding member loosely mounted in said socket and adapted to ride on the work when said first guiding member is used as the edge gauge.

2. An edge gauge comprising a plate slotted at one end for adjustable mounting and having its other end turned laterally to form an edge guiding member, a bar carried by said plate and longitudinally adjustable thereon, a vertical socket mounted on one end of said bar and an edge guiding member loosely mounted in said socket and adapted to ride on the work when said first mentioned edge guiding member is in use.

3. An edge gauge comprising a plate slotted at one end for adjustable mounting and having its other end in the form of an edge guiding member, a bar carried by said plate and longitudinally adj ustable thereon and having one end extending beyond said plate guiding member, a vertical socket mounted on said end of said bar and an edge guiding member loosely mountedin said socket andladapted to ride on the work when it is in engagement with said first guiding member.

4. An edge gauge comprising an elongated plate slotted at one end for adjustable mounting and having its other end in the form of an edge guiding member, a bar adj ustably mounted on said plate and having one end extending over and beyond said edge guiding member, a vertical socket mounted on said extending end of said bar and a second edge guiding member loosely mounted vertically in said socket and having an enlarged head adapted to engage the top of said socket for limiting the downward movement of said edge guiding member in said socket; said second guiding member being held in a lower most position by gravity alone and being adapted to ride on the work when it is being guided by said first edge guiding member.

In witness whereof, I hereunto set my hand this thirteenth day of June, 1928.

WALLACE s. TRINDER. 

